My apple iphone eleven screen has locked and it want even let me power down

Hi ValGlad21,

welcome to the Apple Community, where some of us do our best to help each other troubleshoot :)

Apple support have an article online to help with your iPhone:

If you forgot the passcode on your iPhone, or your iPhone is disahttps://discussions.apple.com/thread/252914092

OR

You might want to view this:

Discussion thread with video: steps to take:

https://discussions.apple.com/thread/252914092

Hope this helps you :)

Apologies for the repeated / wrong link in my reply.

If you forgot the passcode on your iPad, or if a message says that your iPad is disabled, learn what to do.

https://support.apple.com/en-us/HT211078

Hello,

You can try to force restart your iPhone.

Refer to the article below for assistance!

https://support.apple.com/guide/iphone/force-restart-iphone-iph8903c3ee6/ios

Hope this helps! :)